Adapter bushing



March 30, 1937. J, K, DELANO 2,075,024

ADAPTER BUSHING Filed March 2'7, 1935 Inventor James K. Ilelano.

Patented Mar. 30, 1937 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to an adapter bushing for temporarily securing or attaching the end of a service hose or pipe to tapped holes of various diameters and threads, within the range of the 5 particular size of adapter bushing which is used,

each size of adapter bushing being capable of use with a number of different size holes and threads, so that with a few adapter bushings a large number of difierent size holes and threads may be taken care of.

My invention is more particularly adapted for use with automobile crank-case fiushers and cleaners, for attaching thereto the service hose of the fiusher to the drain hole in a secure and tight manner.

A survey of the diiferent makes of automobiles now in use shows that the size, threads and location of the drain openings of the crank-cases or pans vary from less than one inch in diameter to more than several inches, so that if the service hose of the cleaning apparatus were to be attached by the usual type of threaded bushing, it would require a special size and type of bushing for each size and type of drain hole,

5 necessitating that the service station carry all of the required sizes on hand.

In the cleaning and flushing of crank-cases it has been the practice for the attendant at the service station, either to insert the nozzle of the service hose into the drain hole and to hold it therein with his hand, or to secure the hose to some form of support and to catch the drip or discharge in a funnel or other receptacle, but this method is only good where a natural drainage is employed, and will not work where any suction method of cleaning is used as a tight joint is required between the hose and the drain hole.

In any form of hose or pipe connection where either or both an injection or suction is present, it is important that the hose or pipe be securely connected to the drain opening to provide a tight joint, and some universal and quick method or device must therefore be employed and one requiring the minimum number of pieces, adapters or bushings for the greatest number of different sizes of drain openings and diiferent threads.

To provide such a means, I have devised an adapter bushing, one end of which is secured to the end of the service hose or pipe with the standard hose coupling thread, and the other end is so designed that it may be readily and tightly secured within the threaded opening in the crank-case wherever located, thus providing a device that is so designed that each of the adapter bushings will take care of a numbero! difierent size drain openings and threads.

This I have accomplished by constructing the adapter bushing 01 a semi-soft material such as, 5 lead, Babbitt metal, etc., and forming the same with a tapered body portion adapted to be entered into the threaded drain'opening and by being given a few turns therein, threads or parts 01 threads will be out upon the smooth tapered 1 portion by the threads of the drain opening, thus providing a secure means for forming a tight and secure joint or connection.

The adapter bushing being easily removed and capable of many repeated uses within its range 15 of size, as each application will out new threads upon its tapered portion over those already there, without damage owing to the soft material from which it is composed.

In practice, I have found that four or five 20 difierent sizes of adapter bushings so designed that the largest diameter of one adapter corresponds to the small diameter of the next in size, and so on, each adapter bushing having the same taper but varying in diameter at its tapered por- 25 tion, will accommodate all of the different sizes and threads of the tapped drain openings of the usual makes of automobiles, except in a few special cases.

In the use of the adapter bushing, it is intend- 30 ed that the attendant at the service station, first determine which size of adapter bushing is to be used for that particular job, and this is accomplished, by inserting into the drain opening, a gage which corresponds to the adapter bushings and which will indicate by its number, which of the adapter bushings is to be employed.

The object of the invention is to provide an adapter bushing for attaching service hoses or 0 pipes to threaded holes of different diameters.

Another object of the invention is to provide a device of this class by which a quick and tight joint may be effected between a service hose and a drain hole. 45

Another object being to provide a device of this kind that can be used for a number of times and in connection with threaded holes of difierent diameters and which will always provide a tight joint. 50

With these and other objects in view, my invention consists in certain new and useful construction and combination of parts as will hereinafter be fully described and claimed, and further illustrated in the accompanying drawing 55 irmsapartbereoiandinwhichllke reference refer to corresponding parts of the views, and it is understood that changes may be made without departing the spirit or the invention.

the drawing:

Figure 1 is a vertical sectional view showing the device attached both to a service hose and to the threaded drain opening 01' a crank-case.

Figure 2is asimilar view 01' thesame size of adapter bushing, but attached to a smaller diameter of drain opening. 7

Flgure3isasimilarviewoithesamesizeot adapter bushing, but showing it attached to a 1 larger diameter or drain opening.

Figure 4 shows a form of gauge that may be employed for ascertaining the correct size 'of adapter to be used.

Figure 5 is an enlarged bottom plan view of the cap for the tapered end of the plug.

Referring tothe drawing:

The device as here shown comprises a body portion ll provided with the flats H for a wrench or other tool by which the device may be inserted and removed from the hole.

Integral with this body portion is a hose attaching threaded nipple I2, to which is attached the hose It by the usual coupling I4 or other suitable means.

The upper part of the device comprises a tapered plug II also integral with the body Iii, the entire device being formed oi? semi-soft material, such as lead, babbitt, etc., and provided EZEE with an axial bore Ii extending therethrough,

while the upper or small end of said bore I6 is provided with a cap I! which is formed with the attaching legs I. extending into the bore I6 and having bent ends it pressed into the wall of the bore ll, while the stops 20 rest upon the end or the tapered portion i! to space the cap I1 from the end'of the bore I! to form a nozzle by which the flow through the bore I 8 is broken up.

The sides of the tapered plug I! are smooth,

but when the device is entered and rotated within the threaded hole 2| in the crank-case 22, as

shown in the drawing, the threads of the hole II will cut corresponding threads 23 upon the smooth sides oi the tapered plug II by which itwillberetainedwithinthethreadedholeii in asecureandtightmanneruntilbackedoutbys wrench upon the body ll.

Itwillthusbeseenthatshouldtheadapter bushingbeflrstinsertedintoasmallthreaded 5 hole as indicated in Figure 2, the threadswill be out near the outer end of the tapered plug II, and then it the same adapter bushing is inserted into a-iarger diameter hole as shown in Figure 3, thethreadswillbecutnearerthebaseotthe I plug, thus eflecting a tight Joint in either case. and should the same adapter bushing be inserted into a threaded hole having a diilerent size of thread. the new threads will cross thread with the old threads upon the plug and will not aiiect w the tightness of the joint.

Thusthesame adapterbushingmaybeused many times with the same or diil'erent sise drain holes and always provide a secure and tight joint. 20

The gauge shown, comprises a rod ll secured into a base 20 and having a handle 21, and upon the rod 2| are mounted a series of taper plug gauges 28 corresponding to each of the adapter bushings and having a corresponding 25 number. This gauge is inserted into the drain hole, and whichever ot the Plug auges 2' nts the hole will indicate which of the adapter bushings is to be used.

Having thus described my invention, what claim as new and desire to secure by Letters Patent, is:

A bushing for insertion in the opening or a crank case, said opening being of uniform diameter and having its wall threaded throughout its length, the bushing including a tubular member having its outer surface tapered throughout its length and initially unthreaded. the minor end oi the member being of a diameter less than the diameter of the opening, the major end 0! the member being of a diameter greater than the opening, whereby when the member is retated in the opening the member will have cut therein at least some of the threads of the wall opening in its minor or major end, or intermediate such ends, whether the member is partly or fully extended into the opening.

JAMES K. DELANO. 6o 

